40155030 has 48 divisors (see below), whose sum is σ = 105047280. Its totient is φ = 10641984.

The previous prime is 40155007. The next prime is 40155041. The reversal of 40155030 is 3055104.

It is a super-2 number, since 2×40155030² = 3224852868601800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 40154994 and 40155012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14281 + ... + 16859.

It is an arithmetic number, because the mean of its divisors is an integer number (2188485).

Almost surely, 2^40155030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40155030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52523640).

40155030 is an abundant number, since it is smaller than the sum of its proper divisors (64892250).

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

40155030 is a wasteful number, since it uses less digits than its factorization.

40155030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2765 (or 2762 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 40155030 is about 6336.7996654463. The cubic root of 40155030 is about 342.4364490396.

It can be divided in two parts, 4015 and 5030, that added together give a triangular number (9045 = T₁₃₄).

The spelling of 40155030 in words is "forty million, one hundred fifty-five thousand, thirty".