162780156 has 108 divisors (see below), whose sum is σ = 522227160. Its totient is φ = 42275520.

The previous prime is 162780143. The next prime is 162780157. The reversal of 162780156 is 651087261.

It is a super-4 number, since 4×162780156⁴ (a number of 34 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 162780156.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162780157) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 15210 + ... + 23598.

Almost surely, 2^162780156 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 162780156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261113580).

162780156 is an abundant number, since it is smaller than the sum of its proper divisors (359447004).

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

162780156 is a wasteful number, since it uses less digits than its factorization.

162780156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8424 (or 8412 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 162780156 is about 12758.5326742537. The cubic root of 162780156 is about 546.0098617548.

The spelling of 162780156 in words is "one hundred sixty-two million, seven hundred eighty thousand, one hundred fifty-six".