76138491 has 32 divisors (see below), whose sum is σ = 125556480. Its totient is φ = 40348800.

The previous prime is 76138481. The next prime is 76138493. The reversal of 76138491 is 19483167.

It is not a de Polignac number, because 76138491 - 2¹¹ = 76136443 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (76138493) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3481 + ... + 12821.

It is an arithmetic number, because the mean of its divisors is an integer number (3923640).

Almost surely, 2^76138491 is an apocalyptic number.

76138491 is a deficient number, since it is larger than the sum of its proper divisors (49417989).

76138491 is a wasteful number, since it uses less digits than its factorization.

76138491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9387.

The product of its digits is 36288, while the sum is 39.

The square root of 76138491 is about 8725.7372754398. The cubic root of 76138491 is about 423.8394932849.

The spelling of 76138491 in words is "seventy-six million, one hundred thirty-eight thousand, four hundred ninety-one".