77140250 has 32 divisors (see below), whose sum is σ = 157540032. Its totient is φ = 28050000.

The previous prime is 77140243. The next prime is 77140277. The reversal of 77140250 is 5204177.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11276 + ... + 16775.

It is an arithmetic number, because the mean of its divisors is an integer number (4923126).

Almost surely, 2^77140250 is an apocalyptic number.

77140250 is an abundant number, since it is smaller than the sum of its proper divisors (80399782).

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

77140250 is a wasteful number, since it uses less digits than its factorization.

77140250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28079 (or 28069 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 26.

The square root of 77140250 is about 8782.9522371467. The cubic root of 77140250 is about 425.6902278987.

The spelling of 77140250 in words is "seventy-seven million, one hundred forty thousand, two hundred fifty".