156796640 has 288 divisors, whose sum is σ = 506761920. Its totient is φ = 44605440.

The previous prime is 156796621. The next prime is 156796663. The reversal of 156796640 is 46697651.

156796640 = T₃₁₉ + T₃₂₀ + ... + T₉₉₀.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 156796591 and 156796600.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1761716 + ... + 1761804.

It is an arithmetic number, because the mean of its divisors is an integer number (1759590).

Almost surely, 2^156796640 is an apocalyptic number.

156796640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 156796640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (253380960).

156796640 is an abundant number, since it is smaller than the sum of its proper divisors (349965280).

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

156796640 is a wasteful number, since it uses less digits than its factorization.

156796640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 156796640 is about 12521.8465092014. The cubic root of 156796640 is about 539.2360482141.

The spelling of 156796640 in words is "one hundred fifty-six million, seven hundred ninety-six thousand, six hundred forty".