90729054 has 96 divisors (see below), whose sum is σ = 221405184. Its totient is φ = 26671680.

The previous prime is 90729019. The next prime is 90729071. The reversal of 90729054 is 45092709.

It is a super-2 number, since 2×90729054² = 16463522479469832, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 714339 + ... + 714465.

It is an arithmetic number, because the mean of its divisors is an integer number (2306304).

Almost surely, 2^90729054 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90729054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110702592).

90729054 is an abundant number, since it is smaller than the sum of its proper divisors (130676130).

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

90729054 is a wasteful number, since it uses less digits than its factorization.

90729054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262 (or 259 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 90729054 is about 9525.1799982992. The cubic root of 90729054 is about 449.3472907629.

The spelling of 90729054 in words is "ninety million, seven hundred twenty-nine thousand, fifty-four".