77248238 has 16 divisors (see below), whose sum is σ = 122925600. Its totient is φ = 36281856.

The previous prime is 77248229. The next prime is 77248247. The reversal of 77248238 is 83284277.

It is an interprime number because it is at equal distance from previous prime (77248229) and next prime (77248247).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 77248195 and 77248204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18470 + ... + 22262.

It is an arithmetic number, because the mean of its divisors is an integer number (7682850).

Almost surely, 2^77248238 is an apocalyptic number.

77248238 is a deficient number, since it is larger than the sum of its proper divisors (45677362).

77248238 is a wasteful number, since it uses less digits than its factorization.

77248238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4411.

The product of its digits is 150528, while the sum is 41.

The square root of 77248238 is about 8789.0976783740. The cubic root of 77248238 is about 425.8887753593. Note that the first 3 decimals are identical.

The spelling of 77248238 in words is "seventy-seven million, two hundred forty-eight thousand, two hundred thirty-eight".