62428991 has 4 divisors (see below), whose sum is σ = 63880872. Its totient is φ = 60977112.

The previous prime is 62428979. The next prime is 62428999. The reversal of 62428991 is 19982426.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 62428991 - 2¹⁸ = 62166847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (62428999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 725876 + ... + 725961.

It is an arithmetic number, because the mean of its divisors is an integer number (15970218).

Almost surely, 2^62428991 is an apocalyptic number.

62428991 is a deficient number, since it is larger than the sum of its proper divisors (1451881).

62428991 is a wasteful number, since it uses less digits than its factorization.

62428991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1451880.

The product of its digits is 62208, while the sum is 41.

The square root of 62428991 is about 7901.2018706017. The cubic root of 62428991 is about 396.6999130229.

The spelling of 62428991 in words is "sixty-two million, four hundred twenty-eight thousand, nine hundred ninety-one".