16490061 has 40 divisors (see below), whose sum is σ = 28497920. Its totient is φ = 9307872.

The previous prime is 16490059. The next prime is 16490101. The reversal of 16490061 is 16009461.

It is not a de Polignac number, because 16490061 - 2¹ = 16490059 is a prime.

It is a super-2 number, since 2×16490061² = 543844223567442, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16490021) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 71895 + ... + 72123.

It is an arithmetic number, because the mean of its divisors is an integer number (712448).

Almost surely, 2^16490061 is an apocalyptic number.

It is an amenable number.

16490061 is a deficient number, since it is larger than the sum of its proper divisors (12007859).

16490061 is a wasteful number, since it uses less digits than its factorization.

16490061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375 (or 366 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 16490061 is about 4060.7956116998. The cubic root of 16490061 is about 254.5310412023.

The spelling of 16490061 in words is "sixteen million, four hundred ninety thousand, sixty-one".