38946690 has 32 divisors (see below), whose sum is σ = 103858560. Its totient is φ = 10385712.

The previous prime is 38946683. The next prime is 38946697. The reversal of 38946690 is 9664983.

It is an interprime number because it is at equal distance from previous prime (38946683) and next prime (38946697).

It is a super-2 number, since 2×38946690² = 3033689323912200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38946697) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71854 + ... + 72393.

It is an arithmetic number, because the mean of its divisors is an integer number (3245580).

Almost surely, 2^38946690 is an apocalyptic number.

38946690 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

38946690 is an abundant number, since it is smaller than the sum of its proper divisors (64911870).

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

38946690 is a wasteful number, since it uses less digits than its factorization.

38946690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144263 (or 144257 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 38946690 is about 6240.7283228803. The cubic root of 38946690 is about 338.9665563374.

The spelling of 38946690 in words is "thirty-eight million, nine hundred forty-six thousand, six hundred ninety".