90478650 has 24 divisors (see below), whose sum is σ = 224387424. Its totient is φ = 24127600.

The previous prime is 90478643. The next prime is 90478651. The reversal of 90478650 is 5687409.

It is a super-2 number, since 2×90478650² = 16372772211645000, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 90478599 and 90478608.

It is not an unprimeable number, because it can be changed into a prime (90478651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 301446 + ... + 301745.

It is an arithmetic number, because the mean of its divisors is an integer number (9349476).

Almost surely, 2^90478650 is an apocalyptic number.

90478650 is an abundant number, since it is smaller than the sum of its proper divisors (133908774).

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

90478650 is a wasteful number, since it uses less digits than its factorization.

90478650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603206 (or 603201 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 90478650 is about 9512.0265979443. The cubic root of 90478650 is about 448.9335238876.

The spelling of 90478650 in words is "ninety million, four hundred seventy-eight thousand, six hundred fifty".