152572738 has 4 divisors (see below), whose sum is σ = 228859110. Its totient is φ = 76286368.

The previous prime is 152572723. The next prime is 152572753. The reversal of 152572738 is 837275251.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 837275251 = 13037 ⋅64223.

It is an interprime number because it is at equal distance from previous prime (152572723) and next prime (152572753).

It can be written as a sum of positive squares in only one way, i.e., 140019889 + 12552849 = 11833^2 + 3543^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 152572738.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38143183 + ... + 38143186.

Almost surely, 2^152572738 is an apocalyptic number.

152572738 is a deficient number, since it is larger than the sum of its proper divisors (76286372).

152572738 is an equidigital number, since it uses as much as digits as its factorization.

152572738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76286371.

The product of its digits is 117600, while the sum is 40.

The square root of 152572738 is about 12352.0337596689. The cubic root of 152572738 is about 534.3497944314.

The spelling of 152572738 in words is "one hundred fifty-two million, five hundred seventy-two thousand, seven hundred thirty-eight".