213454990 has 32 divisors (see below), whose sum is σ = 440270784. Its totient is φ = 72990720.

The previous prime is 213454981. The next prime is 213454991. The reversal of 213454990 is 99454312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213454991) 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, 23950 + ... + 31630.

It is an arithmetic number, because the mean of its divisors is an integer number (13758462).

Almost surely, 2^213454990 is an apocalyptic number.

213454990 is an abundant number, since it is smaller than the sum of its proper divisors (226815794).

213454990 is a wasteful number, since it uses less digits than its factorization.

213454990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8092.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 213454990 is about 14610.0989045249. The cubic root of 213454990 is about 597.6341931162.

It can be divided in two parts, 21345 and 4990, that added together give a triangular number (26335 = T₂₂₉).

The spelling of 213454990 in words is "two hundred thirteen million, four hundred fifty-four thousand, nine hundred ninety".