156144690 has 96 divisors (see below), whose sum is σ = 439626096. Its totient is φ = 38223360.

The previous prime is 156144673. The next prime is 156144697. The reversal of 156144690 is 96441651.

156144690 is a `hidden beast` number, since 1 + 561 + 4 + 4 + 6 + 90 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 1962801 + 154181889 = 1401^2 + 12417^2 .

It is a super-2 number, since 2×156144690² = 48762328430392200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (156144697) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 370680 + ... + 371100.

Almost surely, 2^156144690 is an apocalyptic number.

156144690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 156144690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219813048).

156144690 is an abundant number, since it is smaller than the sum of its proper divisors (283481406).

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

156144690 is a wasteful number, since it uses less digits than its factorization.

156144690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764 (or 761 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 156144690 is about 12495.7868899882. The cubic root of 156144690 is about 538.4876407702.

The spelling of 156144690 in words is "one hundred fifty-six million, one hundred forty-four thousand, six hundred ninety".