Search a number
-
+
7401720700 = 2252116728837
BaseRepresentation
bin1101110010010110…
…10100101101111100
3201002211122100222201
412321023110231330
5110124320030300
63222244321244
7351264405433
oct67113245574
921084570881
107401720700
113159095350
1215269a3224
1390c5ca7ba
1450304c11a
152d4c1c66a
hex1b92d4b7c

7401720700 has 36 divisors (see below), whose sum is σ = 17521894152. Its totient is φ = 2691534400.

The previous prime is 7401720653. The next prime is 7401720701. The reversal of 7401720700 is 70271047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7401720701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3363319 + ... + 3365518.

It is an arithmetic number, because the mean of its divisors is an integer number (486719282).

Almost surely, 27401720700 is an apocalyptic number.

It is an amenable number.

7401720700 is an abundant number, since it is smaller than the sum of its proper divisors (10120173452).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7401720700 is a wasteful number, since it uses less digits than its factorization.

7401720700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6728862 (or 6728855 counting only the distinct ones).

The product of its (nonzero) digits is 2744, while the sum is 28.

The square root of 7401720700 is about 86033.2534546962. The cubic root of 7401720700 is about 1948.8461900998.

Adding to 7401720700 its reverse (70271047), we get a palindrome (7471991747).

It can be divided in two parts, 740 and 1720700, that added together give a triangular number (1721440 = T1855).

The spelling of 7401720700 in words is "seven billion, four hundred one million, seven hundred twenty thousand, seven hundred".

Divisors: 1 2 4 5 10 11 20 22 25 44 50 55 100 110 220 275 550 1100 6728837 13457674 26915348 33644185 67288370 74017207 134576740 148034414 168220925 296068828 336441850 370086035 672883700 740172070 1480344140 1850430175 3700860350 7401720700