11651020 has 12 divisors (see below), whose sum is σ = 24467184. Its totient is φ = 4660400.

The previous prime is 11650981. The next prime is 11651023. The reversal of 11651020 is 2015611.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 11650985 and 11651003.

It is not an unprimeable number, because it can be changed into a prime (11651023) 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 3 ways as a sum of consecutive naturals, for example, 291256 + ... + 291295.

It is an arithmetic number, because the mean of its divisors is an integer number (2038932).

Almost surely, 2^11651020 is an apocalyptic number.

11651020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11651020 is an abundant number, since it is smaller than the sum of its proper divisors (12816164).

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

11651020 is a wasteful number, since it uses less digits than its factorization.

11651020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582560 (or 582558 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 11651020 is about 3413.3590493823. The cubic root of 11651020 is about 226.7016333984.

Adding to 11651020 its reverse (2015611), we get a palindrome (13666631).

It can be divided in two parts, 11 and 651020, that multiplied together give a triangular number (7161220 = T₃₇₈₄).

The spelling of 11651020 in words is "eleven million, six hundred fifty-one thousand, twenty".