157446738 has 12 divisors (see below), whose sum is σ = 341134638. Its totient is φ = 52482240.

The previous prime is 157446733. The next prime is 157446769. The reversal of 157446738 is 837644751.

157446738 is a `hidden beast` number, since 1 + 574 + 4 + 6 + 73 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 134722449 + 22724289 = 11607^2 + 4767^2 .

It is a junction number, because it is equal to n+sod(n) for n = 157446693 and 157446702.

It is not an unprimeable number, because it can be changed into a prime (157446733) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4373503 + ... + 4373538.

Almost surely, 2^157446738 is an apocalyptic number.

157446738 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

157446738 is an abundant number, since it is smaller than the sum of its proper divisors (183687900).

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

157446738 is a wasteful number, since it uses less digits than its factorization.

157446738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8747049 (or 8747046 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The square root of 157446738 is about 12547.7782097071. The cubic root of 157446738 is about 539.9802667686.

The spelling of 157446738 in words is "one hundred fifty-seven million, four hundred forty-six thousand, seven hundred thirty-eight".