90872742 has 8 divisors (see below), whose sum is σ = 181745496. Its totient is φ = 30290912.

The previous prime is 90872741. The next prime is 90872767. The reversal of 90872742 is 24727809.

It is a sphenic number, since it is the product of 3 distinct primes.

90872742 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 90872742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90872741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7572723 + ... + 7572734.

It is an arithmetic number, because the mean of its divisors is an integer number (22718187).

Almost surely, 2^90872742 is an apocalyptic number.

90872742 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

90872742 is a wasteful number, since it uses less digits than its factorization.

90872742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15145462.

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 90872742 is about 9532.7195490059. The cubic root of 90872742 is about 449.5843767394.

The spelling of 90872742 in words is "ninety million, eight hundred seventy-two thousand, seven hundred forty-two".