90587740 has 12 divisors (see below), whose sum is σ = 190234296. Its totient is φ = 36235088.

The previous prime is 90587683. The next prime is 90587743. The reversal of 90587740 is 4778509.

It is a super-2 number, since 2×90587740² = 16412277276615200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 90587693 and 90587702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90587743) 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, 2264674 + ... + 2264713.

It is an arithmetic number, because the mean of its divisors is an integer number (15852858).

Almost surely, 2^90587740 is an apocalyptic number.

It is an amenable number.

90587740 is an abundant number, since it is smaller than the sum of its proper divisors (99646556).

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

90587740 is a wasteful number, since it uses less digits than its factorization.

90587740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4529396 (or 4529394 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 90587740 is about 9517.7591900615. The cubic root of 90587740 is about 449.1138776271.

The spelling of 90587740 in words is "ninety million, five hundred eighty-seven thousand, seven hundred forty".