16157730 has 32 divisors (see below), whose sum is σ = 40466304. Its totient is φ = 4121216.

The previous prime is 16157719. The next prime is 16157761. The reversal of 16157730 is 3775161.

It is a super-2 number, since 2×16157730² = 522144477505800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

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 15 ways as a sum of consecutive naturals, for example, 11019 + ... + 12398.

It is an arithmetic number, because the mean of its divisors is an integer number (1264572).

Almost surely, 2^16157730 is an apocalyptic number.

16157730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16157730 is an abundant number, since it is smaller than the sum of its proper divisors (24308574).

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

16157730 is a wasteful number, since it uses less digits than its factorization.

16157730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23450.

The product of its (nonzero) digits is 4410, while the sum is 30.

The square root of 16157730 is about 4019.6678967298. The cubic root of 16157730 is about 252.8095344539.

The spelling of 16157730 in words is "sixteen million, one hundred fifty-seven thousand, seven hundred thirty".