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70073740 = 22511443719
BaseRepresentation
bin1000010110100…
…11110110001100
311212212010002201
410023103312030
5120414324430
610541531244
71510421422
oct413236614
9155763081
1070073740
1136611490
121b573b24
1311696269
149441112
1562428ca
hex42d3d8c

70073740 has 48 divisors (see below), whose sum is σ = 161118720. Its totient is φ = 25388480.

The previous prime is 70073737. The next prime is 70073741. The reversal of 70073740 is 4737007.

It is a junction number, because it is equal to n+sod(n) for n = 70073699 and 70073708.

It is not an unprimeable number, because it can be changed into a prime (70073741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97101 + ... + 97819.

It is an arithmetic number, because the mean of its divisors is an integer number (3356640).

Almost surely, 270073740 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70073740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80559360).

70073740 is an abundant number, since it is smaller than the sum of its proper divisors (91044980).

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

70073740 is a wasteful number, since it uses less digits than its factorization.

70073740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1182 (or 1180 counting only the distinct ones).

The product of its (nonzero) digits is 4116, while the sum is 28.

The square root of 70073740 is about 8371.0059132699. The cubic root of 70073740 is about 412.2731951841.

The spelling of 70073740 in words is "seventy million, seventy-three thousand, seven hundred forty".